Ya, that's something I learned recently, some banks don't report changes for a while. For example, my wife and I bought a car at the end of November of 2018. It didn't show up on my credit report until the middle of January, when the bank had processed everything and my first payment was coming due.
Hopefully whoever you are paying your loan to will report it to Transunion, and the update will reflect in Turbo when your score gets refreshed (you can see when your credit score will next get updated if you go to the main credit score home page, and scroll down to the bottom).
Hope that helps,
Lucien